Chrony Graphs [Data Legend]

Day
Week
Month
Chrony server statistics graph - day
Chrony system clock offset graph - day
Chrony system clock tracking graph - day
Chrony sync delay graph - day
Chrony clock frequency graph - day
Chrony clock frequency drift graph - day
Chrony server statistics graph - week
Chrony system clock offset graph - week
Chrony system clock tracking graph - week
Chrony sync delay graph - week
Chrony clock frequency graph - week
Chrony clock frequency drift graph - week
Chrony server statistics graph - month
Chrony system clock offset graph - month
Chrony system clock tracking graph - month
Chrony sync delay graph - month
Chrony clock frequency graph - month
Chrony clock frequency drift graph - month

vnStati Graphs

vnStat summary
vnStat daily
vnStat top 10
 vnStat hourly
vnStat monthly
vnStat yearly

Chrony - NTP Statistics

Command: chronyc -n sources -v


  .-- Source mode  '^' = server, '=' = peer, '#' = local clock.
 / .- Source state '*' = current best, '+' = combined, '-' = not combined,
| /             'x' = may be in error, '~' = too variable, '?' = unusable.
||                                                 .- xxxx [ yyyy ] +/- zzzz
||      Reachability register (octal) -.           |  xxxx = adjusted offset,
||      Log2(Polling interval) --.      |          |  yyyy = measured offset,
||                                \     |          |  zzzz = estimated error.
||                                 |    |           \
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- 213.239.239.164               2  10   377   548   -401us[ -432us] +/-   32ms
^- 213.239.239.165               2  10   377   662    -36us[  -66us] +/-   48ms
^- 2a01:4f8:0:a101::2:3          2  10   377  1033    -43us[  -72us] +/-   46ms
^+ 194.58.200.20                 1  10   377    68    +31us[  +31us] +/- 3441us
^* 2a01:3f7::1                   1  10   377   198   -627us[ -658us] +/- 4184us
^- 2001:638:610:be01::103        1  10   377   690  +2117us[+2087us] +/-   15ms

Command: chronyc -n selectdata -v

  . State: N - noselect, s - unsynchronised, M - missing samples,
 /         d/D - large distance, ~ - jittery, w/W - waits for others,
|          S - stale, O - orphan, T - not trusted, P - not preferred,
|          U - waits for update,, x - falseticker, + - combined, * - best.
|   Effective options   ---------.  (N - noselect, P - prefer
|   Configured options  ----.     \  T - trust, R - require)
|   Auth. enabled (Y/N) -.   \     \     Offset interval --.
|                        |    |     |                       |
S Name/IP Address        Auth COpts EOpts Last Score     Interval  Leap
=======================================================================
D 213.239.239.164           N ----- -----  480   1.0   -27ms   +26ms  N
D 213.239.239.165           N ----- -----  593   1.0   -45ms   +45ms  N
D 2a01:4f8:0:a101::2:3      N ----- -----  964   1.0   -36ms   +36ms  N
+ 194.58.200.20             N ----- -----    0   1.0 -3410us +3472us  N
* 2a01:3f7::1               N ----- -----  129   1.0 -3616us +3548us  N
D 2001:638:610:be01::103    N ----- -----  621   1.0   -13ms   +18ms  N

Command: chronyc -n sourcestats -v

                             .- Number of sample points in measurement set.
                            /    .- Number of residual runs with same sign.
                           |    /    .- Length of measurement set (time).
                           |   |    /      .- Est. clock freq error (ppm).
                           |   |   |      /           .- Est. error in freq.
                           |   |   |     |           /         .- Est. offset.
                           |   |   |     |          |          |   On the -.
                           |   |   |     |          |          |   samples. \
                           |   |   |     |          |          |             |
Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
==============================================================================
213.239.239.164             7   3  103m     -0.031      0.068   -255us    58us
213.239.239.165             6   4   86m     +0.012      0.079    +22us    38us
2a01:4f8:0:a101::2:3        6   3   86m     -0.015      0.158    -49us    72us
194.58.200.20              13  10  206m     +0.000      0.012    +39us    41us
2a01:3f7::1                 6   4   86m     -0.016      0.087    -47us    40us
2001:638:610:be01::103     13   9  206m     -0.001      0.012  +2114us    41us

Command: chronyc -n tracking

Reference ID    : 86474215 (2a01:3f7::1)
Stratum         : 2
Ref time (UTC)  : Fri Apr 17 07:46:43 2026
System time     : 0.000036048 seconds slow of NTP time
Last offset     : -0.000031234 seconds
RMS offset      : 0.000067124 seconds
Frequency       : 5.172 ppm fast
Residual freq   : -0.001 ppm
Skew            : 0.016 ppm
Root delay      : 0.006902544 seconds
Root dispersion : 0.000353256 seconds
Update interval : 1029.4 seconds
Leap status     : Normal